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Siemens 5SY6308-7 — Miniature Circuit Breakers (MCB)

Siemens 5SY6308-7 SENTRON MCB, 3P C-Curve, 6kA/15kA

MPN5SY6308-7
Active

Siemens SENTRON 5SY6308-7, 3-pole miniature circuit breaker, C-curve, 6 kA (EN 60898-1) / 15 kA (IEC 60947-2), 400 V AC, 50/60 Hz.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SY6308-7 — Ratings
ParameterValue
Overvoltage categoryIII
5SY6308-7 — Mechanical
ParameterValue
Width54 mm
Height90 mm
Depth76 mm

Product details

The 6 kA breaking capacity per EN 60898-1 covers most residential and light commercial panelboards; the 15 kA rating per IEC 60947-2 / UL 1077 gives you the headroom for industrial distribution where fault currents run higher. That dual rating is the key spec — if your SCCR study calls for 10 kA at 400 V, the 60947-2 figure clears it; if you're working to a domestic code that only recognizes 60898-1, you still have 6 kA on paper.

Mounting position is unrestricted — vertical, horizontal, or inverted — so it fits tight gland-plate layouts without derating. IP20 with conductors connected; that's the usual panel-interior protection class, not for washdown or outdoor deployment.

The sealable design allows lockout/tagout without an external hasp.

Frequently asked questions

Where can I buy 5SY6308-7 and how is it quoted?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time; no stock count or price is published here.

Will 5SY6308-7 drop into a panel specified around 5SY4140-7 without rewiring?

Both are 3-pole SENTRON MCBs on the same DIN-rail footprint with 54 mm width (3 MW). The 5SY6308-7 carries a C-curve and higher breaking capacity (15 kA per IEC 60947-2 vs the 5SY4140-7's lower rating), so it's a functional upgrade for the same physical slot — no rewiring needed, but verify the trip curve matches your load's inrush profile.

What compliance documentation does Siemens provide for 5SY6308-7?

The breaker is certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077. Halogen-free and silicon-free construction is documented. Standard RoHS and REACH declarations are available from Siemens on request.

MPN
5SY6308-7